315 is the answerd for 3X105 is 105
        
                    
             
        
        
        
The straight line ON has the following equation :
(x - 18)/(x - 0) = (y - 12)/(y - 0)
Where (18,12) are coordinates of N and (0,0) are coordinates of O. 
x - 18/x = y - 12/y
-18y = - 12x
y =12x/18 - - - - - (a) 
The coordinates satisfy equation (a) are (7.5, 5)
Therefore D is the correct answer. 
Good luck
        
                    
             
        
        
        
Hello there! An example problem for this could be:
Emile is looking for a cell-phone plan. His two options are one that costs $40 up front, and costs $0.01 per text, represented by x. The second one is 15 dollars up front and costs $0.06 for each text message. Emile figures that for the first package he has to send 500 texts or more to make it less than the second one. 
        
             
        
        
        
Answer:
Volume of solid = 737 cm³ (Approx)
Step-by-step explanation:
Given:
Radius r = 4 cm
Length of cylinder = 12 cm
Find:
Volume of solid
Computation:
Volume of solid = Volume of hemisphere + Volume of cylinder
Volume of solid = (2/3)πr³ + πr²h
Volume of solid = (2/3)π(4)³ + π(4)²(12)
Volume of solid = 134 + 603
Volume of solid = 737 cm³ (Approx)
 
        
                    
             
        
        
        
You just multiply 450 by .18 and it'll give you the 18% you have to add to 450. 
So the equation would look like: 
450(.18)=81 
Which you then add: 
450+81= 531
So 531 is your total!